| Patents Granted on 1877-05-01 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| CA-7,419 | May 01, 1877 | S. Tilton | Improvements in Calf Muzzles | animal weaners |
| RE7,650 | May 01, 1877 | A.H. Jarecki | Pipe-Tongs | pipe tongs |
| 190,119 | May 01, 1877 | B.L. Budd | Improvement in Screw-Drivers | screwdrivers |
| 190,137 | May 01, 1877 | G. Harman | Carriers for Lathe Work | lathe dogs |
| 190,142 | May 01, 1877 | J.A. House | Art of manufacturing saw blades | making sawblades |
| 190,193 | May 01, 1877 | J.A. Caldwell | Coffee Roaster | coffee roasters |
| 190,275 | May 01, 1877 | D. June, R. Brayton, O.S. French | Improvement in Spark-Arresters | steam spark arresters |
| 190,330 | May 01, 1877 | A.H. Jarecki | Pipe-Tongs | pipe tongs |
| 190,334 | May 01, 1877 | A. Jungclas | Coffee Roaster | coffee roasters |
